simond - Simple Monitor Daemon

The daemon for simon, collects system information every second and logs them to STDOUT (redirect or pipe it to your liking) at a certain interval. If the interval is not 1 sec, the sample mean will be calculated and logged.

Installation

simond requires Python 3.6+, the easiest way to install it is with pip or any other package manager supporting PyPI:

pip install simond

Usage

usage: simond [-h] [-V] [-i LOGINTERVAL]

simond - Simple Monitor Daemon, fetches and logs system information

optional arguments:
  -h, --help            show this help message and exit
  -V, --version         Print simond version number
  -i LOGINTERVAL, --loginterval LOGINTERVAL
                        The log interval in seconds, if it's anything but 1,
                        averages (sample mean) will be logged

Log structure

• host: The system's hostname
• ts: Timestamp of when the data were gathered as UTC Unix time
• loadavg_1min: 1min Load average
• loadavg_5min: 5min Load average
• loadavg_15min: 15min Load average
• mem: Total memory usage in percent as number (0.01 = 1%)
• cpu: Total CPU usage in percent as number
• disk: Total disk usage in percent as number
• diskio_rps: Disk reads in bytes per second
• diskio_wps: Disk writes in bytes per second
• netio_rps: Network traffic received in bytes per second
• netio_sps: Network traffic sent in bytes per second

Currently simon logs each measure as a JSON object separated by newline, the file will therefor not be valid JSON, with the benefit that each line is valid JSON and can be read per line (streaming FTW!):

{"host": "simon", "ts": 1592943008, "loadavg_1min": 1.598, "loadavg_5min": 2.104, "loadavg_15min": 2.504, "mem": 0.03, "cpu": 0.014, "disk": 0.545, "diskio_rps": 0, "diskio_wps": 0, "netio_rps": 0, "netio_sps": 0}
{"host": "simon", "ts": 1592943009, "loadavg_1min": 1.598, "loadavg_5min": 2.104, "loadavg_15min": 2.504, "mem": 0.03, "cpu": 0.036, "disk": 0.545, "diskio_rps": 0, "diskio_wps": 0, "netio_rps": 1024, "netio_sps": 0}

This might change in the future if it is not sufficent.